Struct TransformContext 

pub struct TransformContext {
    pub tx_size: TxSize,
    pub tx_type: TxType,
    pub plane: u8,
    pub row: u32,
    pub col: u32,
    pub skip: bool,
    pub eob: u16,
    pub bit_depth: u8,
    pub lossless: bool,
}

Context for transform coefficient parsing.

Fields

tx_size: TxSize

Transform size.

tx_type: TxType

Transform type.

plane: u8

Plane index (0=Y, 1=U, 2=V).

row: u32

Block row in 4x4 units.

col: u32

Block column in 4x4 units.

skip: bool

Skip coefficient reading (all zero).

eob: u16

End of block position.

bit_depth: u8

Block bit depth.

lossless: bool

Lossless mode.

Implementations

impl TransformContext

pub const fn new(tx_size: TxSize, tx_type: TxType, plane: u8) -> Self

Create a new transform context.

pub fn set_position(&mut self, row: u32, col: u32)

Set block position.

pub const fn tx_class(&self) -> TxClass

Get the transform class.

pub const fn stride(&self) -> u32

Get the coefficient stride (width of transform).

pub const fn num_coeffs(&self) -> u32

Get the number of coefficients.

pub const fn is_luma(&self) -> bool

Check if the block is luma.

pub const fn is_chroma(&self) -> bool

Check if the block is chroma.

pub const fn effective_size(&self) -> (u32, u32)

Get the effective transform for inverse transform. For 64-point transforms, AV1 only uses 32 coefficients.

Trait Implementations

impl Clone for TransformContext

fn clone(&self) -> TransformContext

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TransformContext

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for TransformContext

fn default() -> TransformContext

Returns the “default value” for a type.